Advantage Controls MicroTron O Series, Manual, Page: 12 / 16

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Pump does not achieve Air trapped in suction line Straighten suction line to eliminate high spots.
or maintain prime
Foot valve contaminated or improperly Inspect foot valve screen and assure that foot
installed valve is in a vertical position below fluid level.
Excessive lift Max suction lift is 5 feet with fluids of
specific gravity of water; less with heavier
liquids such as acids. Mount pump in a lower
position relative to the chemical container.
Worn or contaminated check valves Inspect check valves in fluid end for
cleanliness. Clean or replace as necessary.
Split or pinch in suction tube Inspect suction tube through its full length
to assure that there are no splits at the
connections or other restrictions. Move any
objects or equipment which impinges upon
suction tube or reroute as required to assure a
smooth transition from foot valve to pump.
Low chemical level Check fluid level in chemical supply tank
Insufficient fluid Stroke adjustment set too low Check operation of stroke length limiter knob.
If pump delivers to low adjustable rate, check
settings. Readjust as required.
Worn or contaminated check valves Inspect, clean or replace as necessary.
Obstruction in suction line Check suction line for obstructions, clogging,
kinks, or pinch points.
Clogged foot valve screen Clean or replace foot valve screen.
Output (system) pressure too high Relocate the injector to a lower pressure part
of the system.
Diaphragm worn or torn Replace diaphragm, making sure that it is
screwed on fully to shoulder of shaft.
Electronic failure Consult dealer or factory.
Excessive fluid Failure or lack of anti-siphon valve Inspect or add anti-siphon valve.This is
caused when system is in a vacuum condition
or a flooded suction application on systems at
very low pressures.
Excessive stroke length Lower the stroke rate if adjustable on your pump.
Improper stroke length Reduce stroke length.
Pump will not run Pump not turned on or not plugged in Check outlet with meter to assure that correct
or voltage is present and that power supply
cord is in good condition and plugged in.
Electronic failure Consult dealer or factory.
Excessive noise Pump not primed Prime pump.
No output pressure Add an anti-siphon valve to provide 25 PSI
restriction on pump discharge.
VII. Troubleshooting
PROBLEM CAUSE REMEDY